On Sat, 8 Nov 2008 00:10:02 -0600, "Highflyer" wrote:




On an old airplane like the Auster, which was probably built with
1020 tubing and not with 4130 tubing, you don't even have to use
4130 for the patch. :-)

Highflyer
Highflight Aviation Services
Pinckneyville Airport ( PJY )


John
Austers are a mite more sophisticated than that.
the fuselage tubes are in the pommy T45 steel alloy.

T45 equates to an alloy with 45 tons per square inch tensile strength.
I've always thought of it as a precursor to 4130.

Stealth Pilot